Geometry Problem 1379: Common External Tangents. Circles, Secant, Congruent Chords.
Proposition
In the figure below, CD and EF are the common external tangents to the circles A and B. CF intersects the circles A and B at G and H, respectively. Prove that the chords CG and HF are congruent.
This entry
contributed by Markus Heisss, Wurzburg, Bavaria. Published in:
"Die Wurzel - Zeitschrift fur Mathematik", Dec. 2005,
www.wurzel.org.
.
Art of Geometry Problem 1379 using Mobile Apps. Circle Patterns
Geometric art is a form of art based on the use and application of geometric figures. A geometric figure is any set or combination of points, lines, surfaces and solids. A mobile app or mobile application software is a computer program designed to run on smartphones and tablet computers.
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